Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Composer 2
73
Muse Spark
82
Pick Muse Spark if you want the stronger benchmark profile. Composer 2 only becomes the better choice if agentic is the priority.
Agentic
+2.7 difference
Coding
+3.7 difference
Composer 2
Muse Spark
$0.5 / $2.5
N/A
N/A
N/A
N/A
N/A
200K
262K
Pick Muse Spark if you want the stronger benchmark profile. Composer 2 only becomes the better choice if agentic is the priority.
Muse Spark is clearly ahead on the provisional aggregate, 82 to 73. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Muse Spark's sharpest advantage is in coding, where it averages 61.7 against 58. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 61.7% to 59%. Composer 2 does hit back in agentic, so the answer changes if that is the part of the workload you care about most.
Muse Spark gives you the larger context window at 262K, compared with 200K for Composer 2.
Muse Spark is ahead on BenchLM's provisional leaderboard, 82 to 73. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 61.7% and 59%.
Muse Spark has the edge for coding in this comparison, averaging 61.7 versus 58. Composer 2 stays close enough that the answer can still flip depending on your workload.
Composer 2 has the edge for agentic tasks in this comparison, averaging 61.7 versus 59. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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